Johns98TA

iTrader: (2)

I have searched and searched to no avail.

I have HP Tuners and I was wondering if there is any way to recalibrate the factory tach, or at least adjust the responsiveness of the needle? My factory tach is SLOW, and it's off about 200 rpm at idle. Anyone know an easy way to adjust/fix this?

The car is a 98 TA WS6 M6

Johns98TA

iTrader: (2)

Seriously, nobody knows how to adjust the factory tach?

greatwhite99

I got an autometer tach. This is the only real solution I know of.

wait4me

iTrader: (10)

Yeah the motor in the stock tach is just slow. nothing you can do about that...

Johns98TA

iTrader: (2)

OK slow motor I can deal with I guess. What about recalibrating so the needle reads 800 rpm at idle instead of 1000?

wait4me

iTrader: (10)

You just need to pull off the needle and move it a little i guess.

The tach from the cluster is NOT programable via the engine controller. It just gets a single signal pulse set from it. So it is just like any other aftermarket tach that just gets a signal and it is supposed to work..

You "Could" change it in the programming to make the down low be right, BUT it will mess up everywhere else. No way around that.

Johns98TA

iTrader: (2)

Move the needle. Now that's the best answer I have got so far! Why didn't I think of that? Is there an easy way to remove the clear plastic cover from the gauges without removing the entire dash? I'd like to clean that thing anyway...

GuitsBoy

iTrader: (4)

The problem is that the cluster is fed its data via a serial link from the PCM. It does not receive the tach signal from a tach wire like an aftermarket gauge does. Thats the main contributor to the lag. Just nature of teh beast. get yourself a shift light and forget about the tach. Itll still lag behind.